(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('d3-collection'), require('d3-selection')) :
        typeof define === 'function' && define.amd ? define(['d3-collection', 'd3-selection'], factory) :
            (global.d3 = global.d3 || {}, global.d3.tip = factory(global.d3, global.d3));
}(this, (function (d3Collection, d3Selection) {
    'use strict';

    /**
     * d3.tip
     * Copyright (c) 2013-2017 Justin Palmer
     *
     * Tooltips for d3.js SVG visualizations
     */
    // Public - constructs a new tooltip
    //
    // Returns a tip
    function index() {
        var direction = d3TipDirection,
            offset = d3TipOffset,
            html = d3TipHTML,
            rootElement = document.body,
            node = initNode(),
            svg = null,
            point = null,
            target = null;

        function tip(vis) {
            svg = getSVGNode(vis);
            if (!svg) return
            point = svg.createSVGPoint();
            rootElement.appendChild(node);
        }

        // Public - show the tooltip on the screen
        //
        // Returns a tip
        tip.show = function () {
            var args = Array.prototype.slice.call(arguments);
            if (args[args.length - 1] instanceof SVGElement) target = args.pop();

            var content = html.apply(this, args),
                poffset = offset.apply(this, args),
                dir = direction.apply(this, args),
                nodel = getNodeEl(),
                i = directions.length,
                coords,
                scrollTop = document.documentElement.scrollTop ||
                    rootElement.scrollTop,
                scrollLeft = document.documentElement.scrollLeft ||
                    rootElement.scrollLeft;

            nodel.html(content)
                .style('opacity', 1).style('pointer-events', 'all');

            while (i--) nodel.classed(directions[i], false);
            coords = directionCallbacks.get(dir).apply(this);
            // console.log(coords);
            var leftPos = coords.left + poffset[1] + scrollLeft;
            if(leftPos < 0) {
                leftPos = 0
            }
            if(leftPos > 1800) {
                leftPos = 1800
            }
            nodel.classed(dir, true)
                .style('top', (coords.top + poffset[0]) + scrollTop - 10 + 'px')
                .style('left', leftPos + 'px');

            return tip
        };

        // Public - hide the tooltip
        //
        // Returns a tip
        tip.hide = function () {
            var nodel = getNodeEl();
            nodel.style('opacity', 0).style('pointer-events', 'none');
            return tip
        };

        // Public: Proxy attr calls to the d3 tip container.
        // Sets or gets attribute value.
        //
        // n - name of the attribute
        // v - value of the attribute
        //
        // Returns tip or attribute value
        // eslint-disable-next-line no-unused-vars
        tip.attr = function (n, v) {
            if (arguments.length < 2 && typeof n === 'string') {
                return getNodeEl().attr(n)
            }

            var args = Array.prototype.slice.call(arguments);
            d3Selection.selection.prototype.attr.apply(getNodeEl(), args);
            return tip
        };

        // Public: Proxy style calls to the d3 tip container.
        // Sets or gets a style value.
        //
        // n - name of the property
        // v - value of the property
        //
        // Returns tip or style property value
        // eslint-disable-next-line no-unused-vars
        tip.style = function (n, v) {
            if (arguments.length < 2 && typeof n === 'string') {
                return getNodeEl().style(n)
            }

            var args = Array.prototype.slice.call(arguments);
            d3Selection.selection.prototype.style.apply(getNodeEl(), args);
            return tip
        };

        // Public: Set or get the direction of the tooltip
        //
        // v - One of n(north), s(south), e(east), or w(west), nw(northwest),
        //     sw(southwest), ne(northeast) or se(southeast)
        //
        // Returns tip or direction
        tip.direction = function (v) {
            if (!arguments.length) return direction
            direction = v == null ? v : functor(v);

            return tip
        };

        // Public: Sets or gets the offset of the tip
        //
        // v - Array of [x, y] offset
        //
        // Returns offset or
        tip.offset = function (v) {
            if (!arguments.length) return offset
            offset = v == null ? v : functor(v);

            return tip
        };

        // Public: sets or gets the html value of the tooltip
        //
        // v - String value of the tip
        //
        // Returns html value or tip
        tip.html = function (v) {
            if (!arguments.length) return html
            html = v == null ? v : functor(v);

            return tip
        };

        // Public: sets or gets the root element anchor of the tooltip
        //
        // v - root element of the tooltip
        //
        // Returns root node of tip
        tip.rootElement = function (v) {
            if (!arguments.length) return rootElement
            rootElement = v == null ? v : functor(v);

            return tip
        };

        // Public: destroys the tooltip and removes it from the DOM
        //
        // Returns a tip
        tip.destroy = function () {
            if (node) {
                getNodeEl().remove();
                node = null;
            }
            return tip
        };

        function d3TipDirection() {
            return 'n'
        }

        function d3TipOffset() {
            return [0, 0]
        }

        function d3TipHTML() {
            return ' '
        }

        var directionCallbacks = d3Collection.map({
                n: directionNorth,
                s: directionSouth,
                e: directionEast,
                w: directionWest,
                nw: directionNorthWest,
                ne: directionNorthEast,
                sw: directionSouthWest,
                se: directionSouthEast
            }),
            directions = directionCallbacks.keys();

        function directionNorth() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.n.y - node.offsetHeight,
                left: bbox.n.x - node.offsetWidth / 2
            }
        }

        function directionSouth() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.s.y,
                left: bbox.s.x - node.offsetWidth / 2
            }
        }

        function directionEast() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.e.y - node.offsetHeight / 2,
                left: bbox.e.x
            }
        }

        function directionWest() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.w.y - node.offsetHeight / 2,
                left: bbox.w.x - node.offsetWidth
            }
        }

        function directionNorthWest() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.nw.y - node.offsetHeight,
                left: bbox.nw.x - node.offsetWidth
            }
        }

        function directionNorthEast() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.ne.y - node.offsetHeight,
                left: bbox.ne.x
            }
        }

        function directionSouthWest() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.sw.y,
                left: bbox.sw.x - node.offsetWidth
            }
        }

        function directionSouthEast() {
            var bbox = getScreenBBox(this);
            return {
                top: bbox.se.y,
                left: bbox.se.x
            }
        }

        function initNode() {
            var div = d3Selection.select(document.createElement('div'));
            div
                .style('position', 'absolute')
                .style('top', 0)
                .style('opacity', 0)
                .style('pointer-events', 'none')
                .style('box-sizing', 'border-box');

            return div.node()
        }

        function getSVGNode(element) {
            var svgNode = element.node();
            if (!svgNode) return null
            if (svgNode.tagName.toLowerCase() === 'svg') return svgNode
            return svgNode.ownerSVGElement
        }

        function getNodeEl() {
            if (node == null) {
                node = initNode();
                // re-add node to DOM
                rootElement.appendChild(node);
            }
            return d3Selection.select(node)
        }

        // Private - gets the screen coordinates of a shape
        //
        // Given a shape on the screen, will return an SVGPoint for the directions
        // n(north), s(south), e(east), w(west), ne(northeast), se(southeast),
        // nw(northwest), sw(southwest).
        //
        //    +-+-+
        //    |   |
        //    +   +
        //    |   |
        //    +-+-+
        //
        // Returns an Object {n, s, e, w, nw, sw, ne, se}
        function getScreenBBox(targetShape) {
            // var targetel = target || targetShape;
            var targetel = target || d3.event.target;

            while (targetel.getScreenCTM == null && targetel.parentNode != null) {
                targetel = targetel.parentNode;
            }

            var bbox = {},
                matrix = targetel.getScreenCTM(),
                tbbox = targetel.getBBox(),
                width = tbbox.width,
                height = tbbox.height,
                x = tbbox.x,
                y = tbbox.y;

            point.x = x;
            point.y = y;
            bbox.nw = point.matrixTransform(matrix);
            point.x += width;
            bbox.ne = point.matrixTransform(matrix);
            point.y += height;
            bbox.se = point.matrixTransform(matrix);
            point.x -= width;
            bbox.sw = point.matrixTransform(matrix);
            point.y -= height / 2;
            bbox.w = point.matrixTransform(matrix);
            point.x += width;
            bbox.e = point.matrixTransform(matrix);
            point.x -= width / 2;
            point.y -= height / 2;
            bbox.n = point.matrixTransform(matrix);
            point.y += height;
            bbox.s = point.matrixTransform(matrix);

            return bbox
        }

        // Private - replace D3JS 3.X d3.functor() function
        function functor(v) {
            return typeof v === 'function' ? v : function () {
                return v
            }
        }

        return tip
    }

    return index;

})));